InsertQuery   (children 2)
 Identifier test_insert_t2
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 4)
    ExpressionList (children 2)
     Literal \'2019-09-01\'
     Function toString (children 1)
      ExpressionList (children 1)
       Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Function greaterOrEquals (children 1)
     ExpressionList (children 2)
      Identifier number
      Literal UInt64_700000
    Literal UInt64_200